School-furniture



(No Model.)

H. W. MOVICAR.

SCHOOL FURNITURE.

Patented Dec. 9, 1884..

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HENRY V. MoVl GAR, OF \VINCH ESTER, 'Vl RGINIA.

SCHOGL-FURNITURE.

SPECIFICATIQII forming par; of Letters Patent No. 308,921, datedDecember 9, 188%.

Application filed January 18, 1884. (No lllOlltlJ T0 aZZ whom, it mayconcern:

Be it known that I, HENRY W. MoVrcAn, a citizen of the United States,residing at \Vinchester, in the county of Frederick and State ofVirginia, have invented certain new and useful Improvements inSchool-Furniture, of which the following is a full, clear, and exactdescription.

This invention is designedv specially for school-furniture, so called,and its object is to provide capabilities of adjustments in suchfurniture, whereby work or exercise and study may be facilitated by theadaptation of the furniture to the size, position, and purposes or needsof the user.

The invention is applicable in part to other than schoohfurniture, suchas desks generally and draftsmens tables.

The invention consists in the combination and arrangement of parts, ashereinafter particularly set forth and claimed.

In the accompanying drawings, illustrating my invention, in the severalfigures of which like parts are similarly designated, Figure l is a sideelevation of a combined desk and seat embodying my invention. Fig. 2 isa central vertical section of the same from front to rear. Fig. 3 is aface, view on a larger scale of a friction'pad used in the joints of thelegs to aid in holding them in adjusted position. Fig. 4. is a sectionon the scale of Fig. 3, taken in the planes of line at as, Fig. 1; andFig. 5 is a partly-sectional view in the plane of line y y, Fig. 1.

I11 constructing my desk I employ pairs of crossed legs a b, said legsbeing secured at their intersections by superficially roughened, rayed,or otherwise friction-surfaced plates 0, interposed between the two legsof each pair at those points, and screws 0,thumb-11uts f, and washers g,which plates, screws, nuts, and washers constitute friction clamps, andof which there are many well-known and common forms and equivalents. Thelegs a in use will be pivotally fastened at their lower ends, as byangleplates 71, secured to the door, and on which the legs may move asupon a pivot. The legs I) will be held by the friction-clamps in anyposition that may be given. The pairs of legs are united by abook-receptacle, t, fixed to the legs a.

To the upper ends of legs a b are jointed armsj k, respectively, andthese arms at their other ends engage longitudinally-slotted bars Z,depending transversely from the under side of the top at of the desk.The engagement of the arms j It with these slotted bars is renderedadjustable by means of screws 12, fast in said arms, extending throughthe slots in said bars, and engaged by tliumb nuts 0, suitablefrietion-washers, p g, being interposed between the nuts and bars andbars and arms, respectively, to make a secure fastening. These bars maybe notched or roughened, as at Z, to insure the fastening.

The seat is composed of a back, r, having lugs 8 near its head, pivotedto the upper ends of legs a a, and at its bottom provided with arms 2,slotted and notched substantially as shown, and engaged by setscrews uwith the legs 6, and to this back is separately pivoted or hinged thefolding seat '0, of approved con struction. By loosening thejointing-clamps of the crossed legs the ends of the said legs may bemoved toward or from each other, to thereby increase or diminish theheight of the desk, and in this movement the seat will participate. Now,as the seat attached to one desk is occupied by the user of the desk infront, and as it may be undesirable to raise or lower such seat beyond agiven height, I have provided for a separate adjustment of the desktopto accommodate the user of the desk, so that if the seat is to be highthe full adjustment of the seat may be had and the desk top lowered bythe arms j 7c, as indicated by the brokenlines, Fig. 2. So, also, if theseat is to below, the desk-top is raised by the arms j R, as in fulllines, Fig. 1, and the elevation of the desk-top may be varied by thescholar to any extent between its two limits just noted 5 but themovement of the legs of the desk should be under the control of theteacher or other authority. Furthermore, by lowering the arms ]t'various inclinations of the top may be secured for drafting or otherpurposes, as indicated in broken lines, Fig. 1.

By changing the point of engagement of the notched arms t with thescrews to, the seat may be swung on its pivotal connectionswith the legsa toward or from the legs, and so decrease or increase its height andvary its inclination.

I have shown screws as the means for jointing some of the parts; but, asis obvious, the

most suitable known jointing devices will be employed.

What I claim is- 1. The combination, with the connected seat,

desk-top provided with slots, and pairs of between the legs and desk-topand forming the joints between them, and admitting of the independentadjustment of the desk-top as to its height and angle, and theadjustable arms t, connecting the pivoted seat with the legs to providefor the separate adjustment of the inclination of the seat,substantially as shown and'described.

with the legs I) by adjustable arms, as and for the purpose described.

3. A desk-top having side slots and its pairs of crossed legs providedwith clamping devices at their intersections to hold them in adjustedposition, combined with arms j k, jointed to and connecting such top andlegs, and clamping devices to secure the said arms in adjusted positionto the desk-top to vary the height and angle of the top, substantiallyas shown and described.

4. The combination, with the desk and adjustable legs, of the seatpivoted to the said legs at their upper ends, and arms t, and fasteningdevices connecting the seat at its lower end through said arms with thedesl -legs, to permit the change of inclination of the seatindependently of the adjustments of the desk, substantially as shown anddescribed.

In testimony whereof I have hereunto set my hand this 17th day ofJanuary, A. D. 1884.

' H. WV. MOVIGAR.

\Vitnesscs:

WM. H. FINoKnL, E. L. WHITE.

